Development of linear actuators using piezoelectric elements

Abstract

We propose a new type of linear actuator that is based on the rapid expansion of a piezoelectric element and the inertia and friction of a mobile body. The proposed actuator, small and capable of being driven with high precision, may find applications in positioning devices and other precision products. This paper presents the theory of operation, the results of tests performed on the experimental unit built on this principle, and a theoretical analysis of these test results. © 1998 Scripta Technica, Electron Comm Jpn Pt 3, 81(11): 11–17, 1998

Piezoelectric Inertia Motors—A Critical Review of History, Concepts, Design, Applications, and Perspectives

“…Figure 4d. Such continuous slip-slip operation has been realised and described a few times [25,26,86,91,94] for fixed actuator motors.…”

“…Some inertia motors from the literature, using different piezoelectric actuators and different mechanisms to generate normal force. (a) Fixed actuator motor with one linear axis using a piezoelectric stack actuator and a metal spring to generate normal force (Reprinted from [26] with permission from Wiley); (b) Fixed actuator motor with one linear axis using a piezoelectric bending actuator (two piezoelectric discs glued to a passive central disc) and a rubber spring to generate normal force (Reprinted from [27], Copyright 2006 The Japan Society of Applied Physics); (c) Moving actuator motor for linear movement inside pipes (cross-section), using three piezeoeletric bending actuators and flat metal springs to generate normal force (as described in [28,29]); (d) Fixed actuator spherical motor with three rotational axes using piezoelectric shear actuators and a magnet (M) to generate normal force (Reprinted from [30] with the permission of AIP Publishing); (e) Schematic (left) and prototype (right) of a fixed actuator motor for resonant operation with one rotational axis, using a monolithic piezoelectric actuator and a helical spring to generate normal force (Reprinted with permission from [31]). …”

Modeling and control of piezoelectric inertia–friction actuators: review and future research directions

“…This model was used in Chang and Li (1999), Jiang et al (2000), Pohl (1987), Darby and Pellegrino (1997), and Okamoto and Yoshida (1998). In Pohl (1987), Darby and Pellegrino (1997), and Okamoto and Yoshida (1998), a very simple model for modeling of a PA (e.g., ignoring the hysteresis of a PA) and inertia of the entire PIFA was presented.…”

“…In Pohl (1987), Darby and Pellegrino (1997), and Okamoto and Yoshida (1998), a very simple model for modeling of a PA (e.g., ignoring the hysteresis of a PA) and inertia of the entire PIFA was presented. The Coulomb model was used to model the friction in these works; additionally, the simulation and experimental results were compared, and they showed the same trend between the experimental and simulation results but with a large error.…”

High Resolution Actuators for Severe Environments

“…A similar concept was proposed by Higuchi in [3], and was adapted to build the Smooth Impact Drive Mechanism [4], used in camera blur reduction mechanism. The aim of this work is to present the new SPA30uXS, miniature inertial piezo motor, taking advantage from mechanical amplification from the APA ® .…”